using Alfa.ELMA.SDK.Workflow;
using Alfa.ELMA.SDK.Workflow.Scripts;
using EleWise.ELMA.ComponentModel;
using EleWise.ELMA.Model.Events;
using EleWise.ELMA.Workflow.Models;
using EleWise.ELMA.Workflow.Services;

namespace Alfa.ELMA.SDK.Components
{
    /// <summary>
    /// Перехватчик прерывания процессов
    /// </summary>
    [Component]
    public class WorkflowInstanceTerminateHandler : IEntityActionHandler
    {
        private readonly IWorkflowScriptingService _workflowScriptingService;

        public WorkflowInstanceTerminateHandler(IWorkflowScriptingService workflowScriptingService)
        {
            _workflowScriptingService = workflowScriptingService;
        }

        public void ActionExecuted(EntityActionEventArgs e)
        {
            if (e?.Action?.Uid == WorkflowInstanceActions.TerminateGuid && e.New is IWorkflowInstance)
            {
                OnProcessTerminate(e);
            }
        }

        private void OnProcessTerminate(EntityActionEventArgs e)
        {
            var workflowInstance = (IWorkflowInstance) e.New;
            var scriptInstance = _workflowScriptingService.GetScriptInstance(workflowInstance) as IAlfaProcessScript;
            scriptInstance?.OnProcessTerminate(workflowInstance.Context);
        }
    }
}